C Exercises: Print out the corresponding value of sin(1/x) using 4-decimal places

Last update on September 18 2025 12:35:38 (UTC/GMT +8 hours)

Calculate and display sin⁡(1x)\sin(\frac{1}{x})sin(x1) for a real number xxx

Write a C program that accepts a real number x and prints out the corresponding value of sin(1/x) using 4-decimal places.

Note: Use 4-decimal places.
Test data and expected output:
Input value of x:
Value of sin(1/x) is 0.8415

Sample Solution:

C Code:

#include <stdio.h> 
#include <math.h>
int main() {
    double x, tval;

    // Prompt user for input
    printf("Input value of x: \n");

    // Read the input value
    scanf("%lf", &x);

    if (x != 0.0) {
        // Calculate sin(1/x) if x is not zero
        tval = sin(1/x);
        printf("Value of sin(1/x) is %0.4lf\n", tval);
    } else {
        // Display error message if x is zero
        printf("Value of x should not be zero.");
    }

    return 0;
}

Sample Output:

Input value of x: 
Value of sin(1/x) is 0.9995

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to compute sin(1/x) while handling the division-by-zero case.
• Write a C program to calculate sin(1/x) for a series of values and display the results in a table.
• Write a C program to compute sin(1/x) using a Taylor series expansion for increased precision.
• Write a C program to calculate both sin(1/x) and cos(1/x) for a given input and display both results.

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